A guy walks into a bar with his mate who is a tiger. They all start drinking and playing pool and what not, but the tiger has a few too many, and passes out under the pool table. The guy stays for another few hours, eventually ready to leave as the bar is closing. As he is walking out the owner calls out,
"Hey, you not just going to leave that lying here are ya?!"
To which they reply, "nah mate, it's a tiger."



And one much worse.
A guy walks into a bar with a dolphin stuck in his ear. He approaches the bar and is about to order a drink, when the bartender asks,
"hey mate, do you realise you have a dolphin stuck in your ear?"
The guy stops for a moment, removes the dolphin from his ear, and replies,
"sorry mate, I didn't hear you, I had a dolphin stuck in my ear."

and finally, one that didn't go down quite so well in AUS Social.
Q: What was the first thing Peter Brock heard when he went to heaven?
A: Crikey, you're dead too!